The MapleStory 2 Battle Royale mode is called Mush King Championship, comes with the latest update and puts 50 players in the battlefield, with only one coming out as the winner. Battle pets are included as well as some MOBA trappings, such as mobs and the ability for players to hide in bushes and other places.

This mode is the first thing that you can watch in the video below, around the 00:30 mark.